Dejavoo Z11: Wireless Network Error Diagnostic Report -... | terminalfaults.org

Technical Background:

Wireless network connectivity on the Dejavoo Z11 relies on 2.4GHz/5GHz Wi-Fi (IEEE 802.11 a/b/g/n/ac) or cellular data (if equipped). The error indicates a failure in establishing or maintaining a data link. Root causes include signal attenuation, incorrect IP configuration, DNS resolution failure, or firewall restrictions. The internal network adapter's baud rate may be mismatched with the access point. ESD events can also temporarily disrupt network functionality.

Symptoms:

The Dejavoo Z11 reports a 'Network Error' while attempting a wireless connection. Transaction processing is interrupted. Terminal cannot connect to the payment network.

Possible Causes:

1. Weak Wi-Fi signal: Insufficient signal strength between the terminal and the wireless access point.
2. Incorrect Wi-Fi password: Terminal is configured with an outdated or incorrect password for the wireless network.
3. IP Address Conflict: The terminal's IP address conflicts with another device on the network.
4. DNS Resolution Failure: The terminal cannot resolve domain names (e.g., the payment processor's server) due to a DNS server issue.
5. Firewall Restrictions: Firewall rules on the network are blocking the terminal's access to the internet or payment processor.
6. DHCP Server Unavailable: The terminal cannot obtain an IP address automatically from the DHCP server.

Solution:

1

Verify Wi-Fi Signal Strength: Check the Wi-Fi signal strength indicator on the terminal. If weak, move the terminal closer to the wireless access point or use a Wi-Fi range extender.
2

Confirm Wi-Fi Password: Double-check the entered Wi-Fi password in the terminal's network settings. Ensure it matches the access point's password.
3

Restart Terminal and Router: Perform a power cycle on both the Dejavoo Z11 and the wireless router. Unplug both devices, wait 30 seconds, and plug them back in. Start with the router.
4

Check IP Configuration: Access the terminal's network settings and verify the IP address configuration. Ensure it is set to 'Obtain IP address automatically' (DHCP) unless a static IP is required by the network.
5

Test Network Connectivity: Use the terminal's built-in network diagnostics (if available) to test connectivity to the internet and the payment processor.
6

Contact Network Administrator: If the problem persists, consult with the network administrator to investigate potential firewall restrictions or DNS issues.
7

Safe Handling: Unplug the terminal and inspect the power cable and connector for damage. Ensure the power outlet is functioning correctly.

Safety Warning:

Electrostatic discharge (ESD) can damage the terminal's electronic components. In dry environments, especially during winter, take precautions to minimize ESD. Ground yourself by touching a grounded metal object before handling the terminal. Avoid dragging feet on carpet. Unplug the terminal during cleaning. Do NOT use flammable cleaning products.

Prevention:

1. Regular Wi-Fi Signal Monitoring: Periodically check the Wi-Fi signal strength at the terminal's location to ensure consistent connectivity.,2. Secure Wireless Network: Use a strong and unique password for the wireless network.,3. Firmware Updates: Keep the terminal's firmware updated to the latest version to address known network connectivity issues.,4. Cable Strain Relief: Ensure the power cable is properly routed to prevent strain on the connector. Avoid sharp bends or kinks.,5. Cleanliness: Regularly clean the terminal's touchscreen and exterior with a dry, lint-free cloth. Avoid using excessive moisture.

Expert Tip:

If the terminal frequently loses connection after a few minutes of inactivity, check the power-saving settings on both the terminal and the wireless router. Disable any settings that automatically disconnect idle devices. If the device has a cellular backup option, investigate the SIM card signal strength.

Frequently Asked Questions

•What is the default IP address for the Z11 for troubleshooting?

The Z11 typically uses DHCP. Check its menu for assigned IP address. There is no documented 'default' IP.

•How do I perform a hard reset on the Z11 if the network settings are corrupted?

Refer to the official Dejavoo Z11 user manual for the specific hard reset procedure. Power cycle first, and then consult the manual or Dejavoo support.

•What type of wireless security protocols does the Z11 support?

The Dejavoo Z11 supports WPA/WPA2. Check the device manual to ensure the device's security settings meet current PCI-DSS compliance standards.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the default IP address for the Z11 for troubleshooting?

•How do I perform a hard reset on the Z11 if the network settings are corrupted?

•What type of wireless security protocols does the Z11 support?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: